mitmproxy

mitmproxy is an SSL-capable man-in-the-middle proxy for HTTP. It provides a console interface that allows traffic flows to be inspected and edited on the fly. It also...

Free Open Source Mac Windows Linux

Zed Attack Proxy

The Zed Attack Proxy (ZAP) is an easy to use integrated penetration testing tool for finding vulnerabilities in web applications. It is designed to be used by people...

Free Open Source Mac Windows Linux

Proxyman

Proxyman is a high-performance macOS app, which enables developers to view HTTP/HTTPS requests from apps and domains.

Commercial $ $ $ Mac

Pappy Proxy

An intercepting proxy for web application testing.

Free Open Source Mac Linux Python

Websecurify

Websecurify is a powerful web application security testing environment designed from the ground up to provide the best combination of automatic and manual vulnerability...

Commercial Mac Windows Linux

SecApps

Find security vulnerabilities right from your browser. Experience the next generation security tools without the need to install any additional software.

Freemium Mac Windows Linux Web Chrome OS

Tamper Data

Firefox add-on that lets you change headers and request parameters before they're sent to the server. Unlike proxy request modifiers, it's integrated into the...

• Discontinued The extension is no longer developed since 2010 and it's not compatible with Firefox 57 and later. It still works on XUL-based Firefox forks like https://alternativeto.net/software/waterfox/ and https://alternativeto.net/software/palemoon/

Free Open Source Mac Windows Linux Firefox

PatrolServer

Check realtime and continuously for outdated web software on your server. Delivered by mail and an easy to use dashboard and get notified if PHP, Apache, cPanel...

Freemium Mac Windows Linux